[310C:2664][2018-07-01T09:15:24]i001: Burn v3.10.3.3007, Windows v10.0 (Build 17134: Service Pack 0), path: C:\Users\Toni\AppData\Local\Temp\{AB9F5375-30B4-4B6B-8D53-507B0F6C2282}\.cr\mixxx-2.1.1-win64.exe
[310C:2664][2018-07-01T09:15:24]i000: Initializing string variable 'InstallFolder' to value '[ProgramFiles6432Folder]Mixxx'
[310C:2664][2018-07-01T09:15:24]i000: Initializing string variable 'LaunchTarget' to value '[InstallFolder]\mixxx.exe'
[310C:2664][2018-07-01T09:15:24]i009: Command Line: '-burn.clean.room=C:\Users\Toni\Downloads\mixxx-2.1.1-win64.exe -burn.filehandle.attached=568 -burn.filehandle.self=588'
[310C:2664][2018-07-01T09:15:24]i000: Setting string variable 'WixBundleOriginalSource' to value 'C:\Users\Toni\Downloads\mixxx-2.1.1-win64.exe'
[310C:2664][2018-07-01T09:15:24]i000: Setting string variable 'WixBundleOriginalSourceFolder' to value 'C:\Users\Toni\Downloads\'
[310C:2664][2018-07-01T09:15:24]i000: Setting string variable 'WixBundleLog' to value 'C:\Users\Toni\AppData\Local\Temp\Mixxx_20180701091524.log'
[310C:2664][2018-07-01T09:15:24]i000: Setting string variable 'WixBundleName' to value 'Mixxx'
[310C:2664][2018-07-01T09:15:24]i000: Setting string variable 'WixBundleManufacturer' to value 'The Mixxx Development Team'
[310C:2534][2018-07-01T09:15:24]i000: Setting version variable 'WixBundleFileVersion' to value '2.1.1.6743'
[310C:2664][2018-07-01T09:15:24]i100: Detect begin, 2 packages
[310C:2664][2018-07-01T09:15:24]i000: Setting numeric variable 'vcredist32installed' to value 1
[310C:2664][2018-07-01T09:15:24]i000: Registry key not found. Key = 'SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x64'
[310C:2664][2018-07-01T09:15:24]i000: Setting numeric variable 'vcredist64installed' to value 0
[310C:2664][2018-07-01T09:15:24]i052: Condition 'vcredist64installed' evaluates to false.
[310C:2664][2018-07-01T09:15:24]i101: Detected package: vcredist64, state: Absent, cached: Complete
[310C:2664][2018-07-01T09:15:24]i101: Detected package: MainPackage, state: Absent, cached: None
[310C:2664][2018-07-01T09:15:24]i104: Detected package: MainPackage, feature: PDBFeature, state: Absent
[310C:2664][2018-07-01T09:15:24]i104: Detected package: MainPackage, feature: MainProgram, state: Absent
[310C:2664][2018-07-01T09:15:24]i104: Detected package: MainPackage, feature: DesktopShortcutFeature, state: Absent
[310C:2664][2018-07-01T09:15:24]i104: Detected package: MainPackage, feature: Translations, state: Absent
[310C:2664][2018-07-01T09:15:24]i104: Detected package: MainPackage, feature: Manual, state: Absent
[310C:2664][2018-07-01T09:15:24]i052: Condition 'VersionNT64' evaluates to true.
[310C:2664][2018-07-01T09:15:24]i199: Detect complete, result: 0x0
[310C:2664][2018-07-01T09:15:27]i200: Plan begin, 2 packages, action: Install
[310C:2664][2018-07-01T09:15:27]w321: Skipping dependency registration on package with no dependency providers: vcredist64
[310C:2664][2018-07-01T09:15:27]i000: Setting string variable 'WixBundleLog_vcredist64' to value 'C:\Users\Toni\AppData\Local\Temp\Mixxx_20180701091524_000_vcredist64.log'
[310C:2664][2018-07-01T09:15:27]i204: Plan 5 msi features for package: MainPackage
[310C:2664][2018-07-01T09:15:27]i203: Planned feature: PDBFeature, state: Absent, default requested: Unknown, ba requested: Unknown, execute action: None, rollback action: None
[310C:2664][2018-07-01T09:15:27]i203: Planned feature: MainProgram, state: Absent, default requested: Unknown, ba requested: Unknown, execute action: None, rollback action: None
[310C:2664][2018-07-01T09:15:27]i203: Planned feature: DesktopShortcutFeature, state: Absent, default requested: Unknown, ba requested: Unknown, execute action: None, rollback action: None
[310C:2664][2018-07-01T09:15:27]i203: Planned feature: Translations, state: Absent, default requested: Unknown, ba requested: Unknown, execute action: None, rollback action: None
[310C:2664][2018-07-01T09:15:27]i203: Planned feature: Manual, state: Absent, default requested: Unknown, ba requested: Unknown, execute action: None, rollback action: None
[310C:2664][2018-07-01T09:15:27]i000: Setting string variable 'WixBundleRollbackLog_MainPackage' to value 'C:\Users\Toni\AppData\Local\Temp\Mixxx_20180701091524_001_MainPackage_rollback.log'
[310C:2664][2018-07-01T09:15:27]i000: Setting string variable 'WixBundleLog_MainPackage' to value 'C:\Users\Toni\AppData\Local\Temp\Mixxx_20180701091524_001_MainPackage.log'
[310C:2664][2018-07-01T09:15:27]i201: Planned package: vcredist64, state: Absent, default requested: Present, ba requested: Present, execute: Install, rollback: None, cache: No, uncache: Yes, dependency: None
[310C:2664][2018-07-01T09:15:27]i201: Planned package: MainPackage, state: Absent, default requested: Present, ba requested: Present, execute: Install, rollback: Uninstall, cache: Yes, uncache: No, dependency: Register
[310C:2664][2018-07-01T09:15:27]i299: Plan complete, result: 0x0
[310C:2664][2018-07-01T09:15:27]i300: Apply begin
[310C:2664][2018-07-01T09:15:27]i010: Launching elevated engine process.
[310C:2664][2018-07-01T09:15:27]i011: Launched elevated engine process.
[310C:2664][2018-07-01T09:15:28]i012: Connected to elevated engine.
[29BC:2E08][2018-07-01T09:15:28]i358: Pausing automatic updates.
[29BC:2E08][2018-07-01T09:15:28]i359: Paused automatic updates.
[29BC:2E08][2018-07-01T09:15:28]i370: Session begin, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e7f04f4f-ea96-4652-aa45-834c8e3d361e}, options: 0x7, disable resume: No
[29BC:2E08][2018-07-01T09:15:28]i000: Caching bundle from: 'C:\Users\Toni\AppData\Local\Temp\{36515132-0754-43F4-B6AD-DE1733EA7C0F}\.be\mixxx-2.1.1-2.1-git6743-release-x64.exe' to: 'C:\ProgramData\Package Cache\{e7f04f4f-ea96-4652-aa45-834c8e3d361e}\mixxx-2.1.1-2.1-git6743-release-x64.exe'
[29BC:2E08][2018-07-01T09:15:28]i320: Registering bundle dependency provider: {e7f04f4f-ea96-4652-aa45-834c8e3d361e}, version: 2.1.1.6743
[29BC:2E08][2018-07-01T09:15:28]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e7f04f4f-ea96-4652-aa45-834c8e3d361e}, resume: Active, restart initiated: No, disable resume: No
[29BC:3108][2018-07-01T09:15:28]i304: Verified existing payload: vcredist64 at path: C:\ProgramData\Package Cache\CD2FCE1BF61637B2536B66EE52A9662473BBDC82\Microsoft Visual C++ 2015 Redistributable (x64).
[29BC:3108][2018-07-01T09:15:28]e000: Error 0x80070002: Failed to find payload: MainPackage in working path: C:\Users\Toni\AppData\Local\Temp\{36515132-0754-43F4-B6AD-DE1733EA7C0F}\MainPackage and unverified path: C:\ProgramData\Package Cache\.unverified\MainPackage
[29BC:3108][2018-07-01T09:15:28]e000: Error 0x80070002: Failed to cache payload: MainPackage
[310C:3604][2018-07-01T09:15:28]e314: Failed to cache payload: MainPackage from working path: C:\Users\Toni\AppData\Local\Temp\{36515132-0754-43F4-B6AD-DE1733EA7C0F}\MainPackage, error: 0x80070002.
[310C:3604][2018-07-01T09:15:28]e349: Application requested retry of payload: MainPackage, encountered error: 0x80070002. Retrying...
[29BC:3108][2018-07-01T09:15:28]i305: Verified acquired payload: MainPackage at path: C:\ProgramData\Package Cache\.unverified\MainPackage, moving to: C:\ProgramData\Package Cache\{56FC9ECF-6DB3-11E8-9123-BCC46446387A}v2.1.1.6743\mixxx-2.1.1-2.1-git6743-release-x64.msi.
[29BC:2E08][2018-07-01T09:15:28]i301: Applying execute package: vcredist64, action: Install, path: C:\ProgramData\Package Cache\CD2FCE1BF61637B2536B66EE52A9662473BBDC82\Microsoft Visual C++ 2015 Redistributable (x64), arguments: '"C:\ProgramData\Package Cache\CD2FCE1BF61637B2536B66EE52A9662473BBDC82\Microsoft Visual C++ 2015 Redistributable (x64)" /install /quiet /norestart'
[310C:2664][2018-07-01T09:15:29]i319: Applied execute package: vcredist64, result: 0x0, restart: None
[29BC:2E08][2018-07-01T09:15:29]i323: Registering package dependency provider: {56FC9ECF-6DB3-11E8-9123-BCC46446387A}, version: 2.1.1.6743, package: MainPackage
[29BC:2E08][2018-07-01T09:15:29]i301: Applying execute package: MainPackage, action: Install, path: C:\ProgramData\Package Cache\{56FC9ECF-6DB3-11E8-9123-BCC46446387A}v2.1.1.6743\mixxx-2.1.1-2.1-git6743-release-x64.msi, arguments: ' ARPSYSTEMCOMPONENT="1" MSIFASTINSTALL="7" INSTALLDIR="C:\Program Files\Mixxx"'
[29BC:2E08][2018-07-01T09:15:32]e000: Error 0x80070643: Failed to install MSI package.
[29BC:2E08][2018-07-01T09:15:32]e000: Error 0x80070643: Failed to execute MSI package.
[310C:2664][2018-07-01T09:15:32]e000: Error 0x80070643: Failed to configure per-machine MSI package.
[310C:2664][2018-07-01T09:15:32]i319: Applied execute package: MainPackage, result: 0x80070643, restart: None
[310C:2664][2018-07-01T09:15:32]e000: Error 0x80070643: Failed to execute MSI package.
[29BC:2E08][2018-07-01T09:15:32]i318: Skipped rollback of package: MainPackage, action: Uninstall, already: Absent
[310C:2664][2018-07-01T09:15:32]i319: Applied rollback package: MainPackage, result: 0x0, restart: None
[29BC:2E08][2018-07-01T09:15:32]i329: Removed package dependency provider: {56FC9ECF-6DB3-11E8-9123-BCC46446387A}, package: MainPackage
[29BC:2E08][2018-07-01T09:15:32]i351: Removing cached package: MainPackage, from path: C:\ProgramData\Package Cache\{56FC9ECF-6DB3-11E8-9123-BCC46446387A}v2.1.1.6743\
[29BC:2E08][2018-07-01T09:15:32]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e7f04f4f-ea96-4652-aa45-834c8e3d361e}, resume: None, restart: None, disable resume: No
[29BC:2E08][2018-07-01T09:15:32]i330: Removed bundle dependency provider: {e7f04f4f-ea96-4652-aa45-834c8e3d361e}
[29BC:2E08][2018-07-01T09:15:32]i352: Removing cached bundle: {e7f04f4f-ea96-4652-aa45-834c8e3d361e}, from path: C:\ProgramData\Package Cache\{e7f04f4f-ea96-4652-aa45-834c8e3d361e}\
[29BC:2E08][2018-07-01T09:15:32]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{e7f04f4f-ea96-4652-aa45-834c8e3d361e}, resume: None, restart initiated: No, disable resume: No
[310C:2664][2018-07-01T09:15:32]i399: Apply complete, result: 0x80070643, restart: None, ba requested restart: No
Looks like a failure to install Mixxx 2.1. @Sebastien, can you take a look please and see if we have enough info to debug?